The Missouri River carves a deep, winding path through this portion of North-Central Montana, defining the border between Cascade and Chouteau counties. The landscape is characterized by a high plateau deeply incised by numerous coulees, such as Black Coulee, Middle Coulee, and Huntley Coulee, which drain toward the river's valley. These geological features illustrate the heavy erosion patterns typical of the region, creating a complex series of ridges and draws that dictate the local road network.
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This is the sole edition of this map. No revisions or reprints were ever made.
1886 · Great Falls
USGS Topo · 1:250,000
1890 · Fort Benton
USGS Topo · 1:250,000
1892 · Fort Benton
USGS Topo · 1:250,000
1897 · Fort Benton
USGS Topo · 1:250,000
1948 · Portage
USGS Topo · 1:62,500
1949 · Portage
USGS Topo · 1:62,500
1950 · Dent Bridge
USGS Topo · 1:62,500
1953 · Carter
USGS Topo · 1:24,000
1953 · Tunis
USGS Topo · 1:24,000
1954 · Great Falls
USGS Topo · 1:250,000